JPH01319829A - Form inspecting system for input data - Google Patents

Abstract

PURPOSE:To make unnecessary the development of a processing program for respective forms by collating a pattern to define the expression beforehand for the form of input data and the pattern of the input data and inspecting the validity of the form of the input data. CONSTITUTION:An original pattern 1 is a character string expressed in accordance with the description system of a pattern. An original pattern pre- processing 2 confirms that the original pattern 1 is applicable to the pattern description method before the collating processing is executed, converts it to the internal expression applicable to the collating processing and prepares an internal pattern 3. The collating processing of the internal pattern 3 and the input data 5 is executed, and a collating result 6 whether the input data 5 are coincident with the internal pattern 3 and supplement data 7 as the side effect of the collating processing are obtained. Thus, since the method of the pattern collation is used at the form inspection of the input data 5 and the pattern is defined for the form of an input 5, it is not necessary to develop an individual inspecting processing procedure.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a format checking method for input data.

[Conventional technology]

Conventional input data format checking methods have defined testing procedures for each format and fixed data formats and attributes.

[Problem to be solved by the invention]

Among the conventional methods mentioned above, the method in which inspection processing procedures are defined individually has the disadvantage that a processing program must be developed for each format, and there is also a large amount of correction when the input format is changed. be.

Furthermore, with methods that fix data formats and attributes, it is only possible to fix the position and size of each component in the input data, or to select several predetermined attributes for the components. The disadvantage is that there are many restrictions such as

[Means to solve the problem]

The input data format checking method of the present invention defines a pattern expression in advance for each input data format, and checks the validity of the input data format by matching the pattern with the input data. It is characterized by what it did.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a processing configuration diagram when the present invention is applied.

"The original pattern J1 is a character string expressed according to a pattern description method. FIG. 2 shows such a pattern description method, and FIG. 3 shows an example of the description.

Original pattern preprocessing 2 is a preprocessing process that confirms that [original pattern] 1 is compatible with the pattern description method before performing the matching process, converts it into an internal representation suitable for the matching process, and creates an internal pattern 3. generate.

Performs a matching process between "internal pattern" 3 and "input data" 5, and specifies "matching result" 6 as to whether "input data" 5 matches internal pattern 3, and extraction by pattern as a side effect of the matching process. ``Supplementary data'' 7 such as the partial data obtained is obtained. The process flow of verification process 4 is as follows.
Show the diagram.

In FIG. 2 (1), it is shown that the original pattern 1 is a sequence of one or more sub-patterns, and that the input data 5 matches the pattern only if the entire input data 5 is expressed as a pattern. ing. Further, in FIG. 2 (2), the conditions for matching the description form of the original pattern 1 with the partial data of the input data 5 are displayed for each sub-pattern type.

In step (1) in FIG. 4, it is checked whether there is a leading part of the data, and if there is, all cases of the leading part are obtained. In step (2), the first subpattern is removed from the pattern.

Further, in step (3), an unexamined head part of data that matches the first sub-pattern is selected, and the remaining data after removing that part is used as data to perform pattern matching processing. Furthermore, in step (4), if the first subpattern has a side effect, such as extraction, that side effect is executed.

〔Effect of the invention〕

As explained above, by using a pattern matching method to inspect the format of input data, the present invention has the advantage that there is no need to develop individual inspection processing procedures by simply defining a pattern for the input data format. be.

Furthermore, since patterns are used, the format of input data can be expressed flexibly, and when changing or adding a format, there is no need to change the processing procedure by simply changing or adding the pattern.

[Brief explanation of the drawing]

FIG. 1 is a processing block diagram when the present invention is applied, FIG. 2 is a diagram showing an example of the pattern description method of the present invention, and FIG. 3 is a diagram showing an example of pattern description using the description method shown in FIG. Fourth
The figure is a flowchart of verification processing. 1...Original pattern, 2...Preprocessing of the original pattern, 3
. . . Internal pattern, 4. Verification process, 5. Input data, 6. Verification result, 7. Supplementary data.

Claims (1)

[Claims] A format check for input data characterized in that a pattern expression is defined in advance for each input data format, and the validity of the input data format is checked by matching the pattern with the input data. method.